Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 7 10.  Predictions up to the next  14.0 days:

     Date     Time(AURA) AURA Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2015   00:24:42   ( -78.19,-116.81) 07/12/2015   00:23:31  ( -78.18,-116.93)    2.93                71
 07/12/2015   01:13:56   (  78.69,  53.40) 07/12/2015   01:14:02  (  78.68,  53.30)    2.32                 6
 07/14/2015   16:41:05   ( -78.36,  -0.10) 07/14/2015   16:40:20  ( -78.35,  -0.22)    2.69                45
 07/14/2015   17:30:19   (  78.85, 170.16) 07/14/2015   17:30:51  (  78.84, 170.08)    1.86                32
 07/17/2015   08:57:25   ( -78.63, 117.20) 07/17/2015   08:57:06  ( -78.63, 117.20)    0.26                19
 07/17/2015   09:46:41   (  79.03, -72.91) 07/17/2015   09:47:39  (  79.03, -72.87)    0.96                58
 07/20/2015   00:24:29   (  78.36,  64.06) 07/20/2015   00:23:19  (  78.37,  64.12)    1.49                70
 07/20/2015   01:13:48   ( -78.72,-126.45) 07/20/2015   01:13:56  ( -78.71,-126.51)    1.55                 8
 07/22/2015   16:40:50   (  78.56,-179.05) 07/22/2015   16:40:07  (  78.57,-178.95)    2.40                43